// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database();
// 云函数入口函数
exports.main = async (event, context) => {
  const openid = cloud.getWXContext().OPENID
  var {num,id}=event;
  return await db.collection("xiangcun_cars").where({
    openid:openid,
    _id:id
  }).update({
    data:{
      num:num,
      addTime:Date.now()
    }
  })
 
}